Door check and lock.



v PATENTED AUG. 23, 1904. A. KALB & A. A. R. BERGER.

' DOOR CHECK AND LOCK.

APPLICATION FILED JULY 13.1903.

NO MODEL.

3 SHEETS-SHEET 1.

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31a/ventou- No. 768,528. PATENTED AUG. 23, 1904.

A. KALB & A. A. R. BERGER.

DGOR CHECK AND LOOK.

APPLICATION FILED JULY 13. 1903. No MODEL. a SHEETS-SHEET 2.

v v r l/ JINI f 6 b ai 40 o 5 l IU'IA Ia v t y v f F 15 .ii 3

No MOMI..

APPLICATION FILED JULY 13, 1903.

D AUG. 23, 1904.

3 SHEETS- SHEET 3 Patented August 23, 1904,

AUNITED y STATES PATENT' QEEICE.

ADAM KALR AND ALFRED A. R. BERGER, oE NEW YORK, N. Y.

DOOR CHECK AND LOCK.

SPECIFICATION forming part of Letters Patent No. 768,528, dated. August 23, 1904.

l Application filed July 13, 1903. Serial No. 165,340. (No model.) I

.To all whom/ it may concern:

Be it known that we, ADAM KALB and AL- FRED A. R. BERGER, citizens of the United States, residing in the borough of Manhattan, city of New York, in the county of New York and State of New York, have invented new and useful Improvements in Door Checks and Locks, of which the' following is aspecification. l

This invention relates to certain improvements in door-checks; and it consists in peculiarities in the construction of parts and in novel combinations of elements substantially as hereinafter described, and particularly pointed out in the subjoined claims.

Among the important objects of the invention the following may be specially noted:

First, to provide as one member of the device a lock having means for operating it from the inside and outside of the door, which lock is specially constructed. to be of most simple, durable, and inexpensive construction and small size and at the same time to adapt its boltto be projected the considerable extent desirable for use'as a part of this door-check;

second, to provide as one member of the device a lock comprising a tumbler mechanism havmg a gate free to turn therewith and provided with means for forcing said gate into and out of the tumblers at predeterminedplaces in the movement of the parts and wherein said'elements may be most conveniently A tested and fitted for proper joint operation; third, to provide the keeper which carries the checking-arm with most simple and practical means for preventing engagement of the bolt end with said checking-arm.

These and other objects of the invention are well accomplished by the construction illus# trated in the accompanying drawings, in Which- Figure'l is a plan view of a door-check embodying our improvements, showing the position of the parts when the door is closed and the stop-plate is adjusted to permit engagement of the lock-bolt with the checkingarm. Fig. 2 is a central longitudinal section through the lock and keeper, with the stop'- plate of the keeper adjusted across the path 'of the lock-bolt. Fig. 3 is an end view ofthe lock. Fig. 4. is a perspective view showing the position of the parts when the door is checked in partly-open'position; Fig. 5 is a plan view of the under side of the keeper portion of the lock, showing the slidel or stop-plate ,adjusted out of the path of the lock-bolt to permit engagement of the bolt and checkingarm. Fig. 6 is a sectional view on the line l 4 of Fig. 7. Fig. 7 is a plan view of .the lock, with the rear plate thereof and the tumbler mechanism carried by said plate removed to disclose the interior mechanism mounted on the front plate. Fig. 8 is a ,plan view of the' interior surface of the rear plate and the tumbler mechanism thereon. Figs. 9, 10, 11, 12,'and 13 are details of different constructions of tumbler mechanisms which are more or less practical for the purpose of the present invention. Fig. 14 is a detail. plan view showing a pin employed in lieu of the slide or stop-plate to prevent operation of the checking-arm by the lock-bolt.

The same reference characters designate the `same parts in the several figures.'

A designates the casing of the'lock considered as a whole, and B designates the lockbolt, the head 1 of which bolt is adap'ted to be projected through a-suitable opening in the nosing 2 of said casing. Said head has lateral wings 3 and a beveled under surface 4.-

C designates the lock-keeper, which comprises a hollow casing havingv an opening presented to the head of said bolt and also having an opening 6 in its top surface, through which latter opening the lock-bolt has access to lthe checking-,arm D when said bolt is projected and the door beingopened. This checking-arm is approximately U-shaped, and itspivoted end 9 overlies said opening 6. During the opening of the door when the bolt B is projected the lateral wings 3 of the latter engage the rear surfaces of the limbs 7 of said checking-arm, and said arm is thereby automatically swung outward in a' horizontal arc until its closed end Aengages said bolt-head, thus lchecking the door in partially-open position and preventing intrusion. rlhe head of `-said bolt travels in the open spacebetween the limbs of said arm. lhile the door is being closed from its said partially-open position, the checking-arm is automatically returned to its former position, ready to be again operated automatically by the wings 3 of said bolt by a suitable returning means, such as the springs 10. To permit the door to be fully opened, the lock-bolt Bis retracted from the path occupied by said checking-arm. Itis a purpose of the present invention to permit this retraction to be accomplished from within the room or by a person provided with a proper key from without said room. To this end a night-latch is employed.

It will be observed that the extent of opening of the door prior to the checking thereofl is largely determined by the extent of projection of the lock-bolt, and in order that said bolt may have a considerable range of longitudinal movement, so as to thereby permit the door to be checked at an open position, which permits the person within the room satisfactorily to see and talk with the one outside said room without sok increasing the size ot' the lock as to make it expensive or cumbersome, we have produced a novel construction of vlock with especial reference to securing a maximum range ot' longitudinal movement of the bolt in a most simple, inexpensive, and compact construction, whereby the lock is made most practical for the purpose of the present invention.

Said bolt B has a bifurcated rear end or tail 11, the limbs of which are provided with lugs 12, which extend toward the outer plate or front side a of the lock-casing and are engaged by wings 13, carried by a post 14, which is pivoted to said easing-plate or side o in a plane vbetween the limbs of said tail 11 and is provided outside the casing with a head 15, by which it may be turned in either direction to retract the bolt from the inside of the room. To prevent retraction of the bolt, there may be employed a well-known means for said purpose consisting' of a guided slide 16, having a flange 17, which in one position of the movement of said slide is in the path et' rearward or inward movement oi' a lug 18, projecting' from the side of said bolt, said slide being mounted upona bowed spring 19, which keeps it in adjusted position, and being provided outside the casing with a head 20, by which it is adjusted. To retract the bolt from the outside of the door, there is employed a suitable tumbler mechanism, such as that shown in the accompanying drawings, in which four sliding tumblers 21, having a well-known arrangement of springs 22 for elevating them and the usual gates 23, are employed. These tumblers are mounted in a cylinder 24, having an opening 25, through which the fence 26 hereinafter described has access to said gates, and said cylinder 1s mounted to turn within a sleeve 27, formed on the rear casing-plate l l i l and has an ear 28, which engages ay lug 2*.) trom the end ol the tailpicce 1 l oi' the bolt l, whereby the bolt is retracted when the cylinder is turned in a proper direction.

.lt will be observed that the cylinder 2l is mounted between the limbs ol the bolt-tail ll, and in practice its inner end engages ay plate 30, lixed to the post 14C, vfrom which plate project the wings 13, hereinabove referred to. r1`he cylinder turns upon said plate when operated by a key and does not turn with lsaid plate when the latter is turned by the head lo. The fence 26 prevents axial movement ot the cylinder 24e, and hence prevents retraction of the bolt from the out-side ot the door.` except when the gates 23 are registered with each other, and the extent of retractive movement ot' the bolt depends upon the extent to which the cylinder 24 may be turned. '.llherelore in order not to unduly limit the turning movement ol the cylinder the Vlence is so arranged as to be free to turn therewith throughout a considerable extent or to not confine thelurning movement et' the cylinder to less than that wherein it is capable ot acting upon the bolt, and means are employed to lorce said tence into the gates when the tum blcrs are turned to retract the bolt and to torce said tence from its engagement with said gates in the return movement of the tumblers. Several constructions more or less satisfactorily accomplishing this purpose are shown in the drawings. In one form of the device (well shown in Fig. 8) the fence 2G is pivoted at one end 31 upon the ear 28 of the tumbler-cylinder 21v and its other end is entirely tree. One edge 32 is cam-shaped and engages a lug 33 project-ing from the back plate of the latchzasing, whereby when a proper key is inserted and the tumblers are depressed thereby until they register with each other in the line ot the fence the tumbler mechanism may be turned axially in the direction ot the arrow, Fig. o', and in the initial portion of said turning movement the fence will be thrust into the gates by the action oit' said lug on its calnshaped edge. As said tence is tree to partake of the axial movement ot the tumblers cylinder throughout a considerable extent ot movement of the latter, it is obvious that the longitudinal movement of the bolt may be correspondingly pr e longed without restraint from said fence. ln the return movement ol' the bolt and tumblers cylinder the tree end of the fence 26 engages a lug '51 on the casing-plate which stops the movement ol' said fence with the cylinder before the latter has completed its movement, and hence during` the final movement of said cylinder the Vence is caused automatically to be withdrawn rom the gates, which latter are then raised by their springs 22.

Said return movement of the bolt-and-tumbler mechanism is caused automatically by a IOO IlO

coil-spring 35, which is located in a plane parallel with the longitudinal axis of the bolt and preferably is set in a recess 36, extending longitudinally of the shank of said bolt. This spring bears at one end againsta lug 37, projecting from the back plate Z) of the latch-casdescribed permits the bolt to have an extensive range `of* longitudinal movement, thus especially adapting it for use as one member of a door-check of the kind herein set'forth and obviates the necessity of employing a heavy, cumbersome, or expensive .construction of lock vto afford the required range of movement to the bolt. It will be further apparentthat inasmuch as the lugs which force the fence into and out of the gates of the tumbler mechanism are located on the yback plateb of thecasing the operation of iitting the parts to each other and of .testing them may be most readily accomplished as said parts 'are in full view of the operator during said fitting and testing operations. Y

To permit the door to be fully opened, it is necessary that the bolt be withdrawn from the keeper while. the door is closed. VIn order to preventaccess to the head of the bolt of a tool inserted from ythe outside for the purpose of forcing -the bolt back from the keeper, the back plate b is formed or` provided with a projection 38, which extends beneath the plane of the bolt-head into the space between the door and the door-casing. The keeper ofthe lock also has a projection to assist said'projection 38 to prevent the insertion to the head of the bolt of a iiat instrument from the outer side of the door. The nosing 2 of the lock-casing has an extension 39, which projects forward therefrom and makes a most desirable finish to the front of the lock. v l r y In closing the door from its fully-open position the rear surfaces of the wings 3 of the bolt engage rounded or beveled surfaces 40 to said slide or stop plate.

on the-keeper, thus thrusting the bolt automatically back into the lock-casing and permitting it lto pass the top of the keeper. Y

To render'the checking-arminoperative by I the bolt, and thus prevent the door from being opened even partially without first retracting the bolt, the keeper is provided' with means adjustable across the path betweenthe bolt and checking-arm. The means greatly preferred for this purpose comprise a slide or' stop plate 41, with which is connected a post 42, which is movable back and forth in a slot 43, formed in the top surfaceof the keeper to transmit similar movement directly This post 42 has a head '44 outside the keeper for convenience in adjusting lthe slide, and said head has at its opposite ends projections 45, which extend toward the top surface of the keeper. When the slide or stop plate is adjusted out of the path of the lock-bolt, the projection 45 at the rear of said head extends over the edge-of the rear end of the keeper, and in the opposite position of the adjustment of said slide or plate the forward projection similarly extends over the edge of the forward end ofthe keeper. Said projections thus lock the slide or stop plate in its adjusted positions. A flat spring 46, attached to the inner end of the post 42, permits the head 44 to yield to allow the projections to pass over the edges of the keepers and serves'to pull said post and head toward the keeper to place the projections in proper holding position with respect to the keeper.

In lieu of the slide or stop plate hereinabove described there may be employed a pin 141, adapted to be inserted through openings in the keeper and to extend across said keeper and to lie between the bolt and the checkingarm, so as to prevent said bolt from engaging said checking-arm, said pin being removablel from said openings in the keeper in order to permit the bolt to engage said arm. This form of device is indicated in Fig. 14, wherein the other partsof the device shown are of identical vconstruction with the corresponding parts shown in the other forms of the invention. 1

Referring to the modifications of the fence, l

the one, 126, shown in Fig. 9 has a pivoted link 127 with anelongated opening 128 extending from it, said link being engaged byl a pin ,129, projecting from the back plate of the lock-casing. In the construction shown inFig. 10 the fence 226 has an elongated slot 227 in its free end to engage a pin 228 from said back plate. 'In the construction shown in Fig. 11 the fence 326 has an open-ended slot 327 in itsfree end, which receives a `pin 328 from said back plate', 1n the construction shown in Fig. 12 the fence 426 has a pivoted link 427 with an elongated yslot 428 to receive a pin 429, extending from the back IOO IIO

plate, and the end of the fence remote from its pivot 430 and contiguous to said pin 429 is formed to provide a recessed surface 431,

and in the construction shown in Fig. 13-the.

fence 526 has an elongated slot 527 to engage a pin 528, projecting from the back plate of the lock-casing.

Having thus described the invention, what we believe to be new, and desire to secure by Letters Patent, and what .we therefore claim', 1S x 1. Adoor. check and lock, comprisinga lockA and its keeper; said lock comprisingacasing having a removable back plate provided with lugs, spring-pressedbolt having a projection at one end, a cylinder mounted to turn and provided with a projectionltoengage the projection of said bolt, tumblers mounted in said cylinder and a fence pivoted at one end and carried by said cylinder and free to turn therewith when engaged with the gates of said tumblers and forced into and out of said gates by the lugs on said back plate; and said keeper having a pivoted checking-arm to engage the projecting end of the lock-bolt.

2. Adoor check and lock, comprising a lock and its keeper; said lock comprising a casing having a removable back plate provided with lugs, a spring-pressed bolt having a bifurcated inner end provided with projections,

- means connected with the bolt for retracting the same from the inner side of the door, said means having wings engaging projections from the bifurcated end of said bolt, and a tumbler mechanism for retracting the bolt from the outer side of the door, comprising` a cylinder carried by said back plate and mounted to turn therein and arranged between the limbs of the bifurcated end of the bolt and having' a projection to engage a projection from the latter, spring-pressed tumblers slidably mounted in said cylinder and a fence to engage the gates of said tumblers, said fence being pivoted at one end to said projection from the cylinder and carried thereby and free to move therewith when engaged with said gates and moved into and out of said gates by the lugs on said back plate; and said keeper having a pivoted checking-arm to engage the projecting end of the lock-bolt.

3. A combined lock and door-check, consisting of a lock and its keeper; said lock comprising a casing, a spring-pressed bolt having a projection within the casing and its head formed with a lateral wing, a cylinder mounted to turn and provided with a projection to engage said projection of the bolt, and a tumbler mechanism, having a cylinder and a pivoted fence carried by said cylinder and free to turn therewith and means for forcing said fence into and out of the gates of said tumbler mechanism; and said keeper having a checking-arm pivoted to swing in a horizontal are and arranged to be adj usted into checking position by the wing of said bolt-head, substantially as described and for the purposes specified.

4. A combined door check and lock, consisting of a lock and its keeper; said lock comprising a spring-pressed bolt having a projection at one end, a cylinder mounted to turn and provided with a projection to engage the projection of said bolt, tumblers mounted in said cylinder and a fence pivoted at one end and carried by said cylinder and Dfree to turn therewith; and said keeper having an opening in its top surface through which said bolt travels when it is projected and the door is being opened, a checking-arm pivoted to the casing of the keeper and overlying said opening and in the path of movement of said bolt,

and means adjustable across the path between said keeper and arm, substantially as d escri l )ed and for the purposes set forth.

5. A lock for use as a member ol a doorchcck, comprising a casing having a removable back plate provided with lugs, a springpressed bolt having a projection within the casing, a cylinder mounted to turn and provided with a projection to engage the projection of said bolt, tumblers carried by said cylinder, and a fence to engage the gates of said tumblers, said fence being pivoted at one end and carried by said cylinder and free to turn therewith and forced into and ont of the gates by said lugs on the back plate, substantially as described and for the purposes set forth.

6. A lock for use as a member of a doorcheck, comprising a casing having a removable back plate provided with lugs and a. projection, a bolt having a projection within the casing, a cylinder mounted to turn and provided with a projection to engage the projection from said. bolt, tumblers carried by said cylinder, a fence to engage the gates of said tumblers, said fence being pivoted at one end land carried by said cylinder and free to turn therewith and forced into and out of said gates by said lugs on the back plate, and a returningspring for said bolt and cylinder, said spring being arranged parallel with the stem of said bolt and having one end engaged with said bolt and its other end engaged with said projection from the back plate, substantially as described and for the purposes set forth.

7. A lock for use as al member of a doorcheck, comprising a casing having a removable back plate provided with lugs, a bolt movably mounted in said casing, and a tinnbler mechanism for operating said bolt in one direction, said tumbler mechanism comprising a cylinder mounted to turn and provided with tumblers, and a fence pivotally connected with said cylinder and free to turn therewith and arranged to be forced into and out ol the gates of said tumblers by said lugs on the back plate, substantially as described.

8. The combination with a lock, of a keeper comprising a casing, a checking-arm pivoted to said casing and arranged in the path ol' movement of the bolt of said lock so as to be adjusted thereby and to hold the door in partlyopen position, means adjustable into and ont of the path between said bolt and checkingarm, and locking devices for said adjustable means.

9. ln a door check and lock, the combination of a lock and its keeper, said keeper comprising a casing, a checking-arm pivoted to said casing and arranged in the path of movement of the bolt of said lock so as to be adjusted thereby and to hold the door in partlyopen position, a slide adjustable into and out of the path between said bolt and checking- IOO IBO

arm,means jfor adjusting said slide, and pro-A jections from said adjusting means adapted toA lock the slide'inits adjusted positions.

Il0'. In adoor check and lock, the combination of a lock and its keeper, said keeper cornprising a casing, a checking-arm pivoted to said casing and arranged in the path of Inove.

rnent of the bolt of said lockso as tobe adjusted thereby and to holdthe door in partlyopen position, a slide adjustableintoand out' l of the path between said 'bolt and checkingarm, ahead connected with said slide and operated to adj ust the same, said head having locking projections, and a spring connected with said head, for the purposes set forth.

In testimony whereof wel have signed our names to this specification in the presence of two subscribing witnesses.

ADAM KALB.

ALERED A. R. BERGER.

Vlitnesses:

CHARLES M. NAGEL, CHARLES A. G. KNoLL. 

